CN215628065U

CN215628065U - Temporary separation device for blast furnace slag and iron

Info

Publication number: CN215628065U
Application number: CN202023067563.2U
Authority: CN
Inventors: 赵航; 刘二浩; 刘苗; 周亮亮; 邓小辉; 衡兴革
Original assignee: HBIS Co Ltd Chengde Branch
Current assignee: HBIS Co Ltd Chengde Branch
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2022-01-25
Anticipated expiration: 2030-12-18

Abstract

A temporary separation device for blast furnace slag and iron belongs to the technical field of blast furnace ironmaking equipment and is used for temporarily separating slag and iron in a main iron runner. The technical scheme is as follows: the slag-iron separator is a cuboid pouring block with a trapezoidal section, the gradient of two side edges of the trapezoid is matched with the gradient of the side wall of the main iron runner, the length of the lower bottom of the trapezoid is greater than the width of the bottom surface of the main iron runner, the length of the upper bottom of the trapezoid is less than the width of the upper end opening of the main iron runner, a gap between the lower bottom surface of the slag-iron separator and the bottom surface of the main iron runner is an iron through hole channel, a pouring channel is arranged between the upper top surface of the slag-iron separator and the two side walls of the upper part of the main iron runner, a pre-embedded steel bar anchoring part is arranged in the slag-iron separator, a hoisting ring is arranged above the slag-iron separator, and the hoisting ring is connected with the steel bar anchoring part. The utility model has simple structure, convenient use and easy manufacture, avoids the conditions of blast furnace damping down, slow wind, single-field tapping and the like caused by the failure of a large gate of the skimmer, greatly reduces the construction time and ensures the normal production of the blast furnace.

Description

Temporary separation device for blast furnace slag and iron

Technical Field

The utility model relates to a temporary separation device for blast furnace slag and iron, and belongs to the technical field of blast furnace ironmaking equipment.

Background

The main iron runner of the blast furnace is important equipment in front of the blast furnace, and the main iron runner of the blast furnace has the function of realizing the separation of liquid slag and liquid iron. The skimmer is a container for separating iron slag during tapping, and the skimmer is ablated and washed by high-temperature iron slag during use. Under normal conditions, every month, the iron amount communicated with each main iron is about one hundred thousand tons, the slag irons are separated through the skimmer, the large gate part of the skimmer can be ablated and damaged by iron flow scouring in the high-temperature production environment with large load, the lower part of the slag iron separation device is seriously eroded by scouring, and then the iron runner is subjected to slag feeding. Therefore, it is necessary to take measures in time when the large gate of the skimmer is damaged, and the problem of slag entering of the iron runner caused by the damage of the slag-iron separation device is solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a temporary separation device for blast furnace slag and iron, which can temporarily solve the problems that the slag and iron cannot be separated and iron slag enters an iron runner due to the damage of the slag and iron separation device under the condition of not influencing the tapping of a blast furnace.

The technical scheme for solving the technical problems is as follows:

the temporary separation device for blast furnace slag and iron consists of a slag and iron separator, a hoisting ring and a reinforcing steel bar anchor hook, wherein the slag and iron separator is a cubic pouring block with a trapezoidal section, the length of the trapezoidal upper bottom is greater than that of the trapezoidal lower bottom, the inclination of two side edges of the trapezoid is matched with that of the side wall of a main iron runner, the length of the trapezoidal lower bottom is greater than that of the bottom surface of the main iron runner, the length of the trapezoidal upper bottom is less than that of the upper end opening of the main iron runner, a gap between the lower bottom surface of the slag and the bottom surface of the main iron runner is an iron through hole, a pouring channel is formed between the upper top surface of the slag and iron runner and two side walls at the upper part of the main iron runner, a pre-embedded reinforcing steel bar anchoring part is arranged in the slag and iron separator, the reinforcing steel bar anchoring part and the slag and iron separator are integrally poured, the hoisting ring is arranged above the slag and connected with the reinforcing steel bar anchoring part in the slag and iron separator.

Above-mentioned blast furnace slag-iron temporary separation device, the reinforcing bar anchor assembly in the slag-iron separator includes two perpendicular trapezoidal frames of placing, and the plane of two trapezoidal frames is parallel with the trapezoidal cross-section of slag-iron separator respectively, and the upper portion width of two trapezoidal frames is greater than the lower part width, has a plurality of lacing wire welded connection between two trapezoidal frames, and a plurality of lacing wires are perpendicular with the plane of trapezoidal frame, and the lower extreme of hoist and mount ring has perpendicular decurrent jib, and the jib stretches into in the slag-iron separator with reinforcing bar anchor assembly welded connection.

The utility model has the beneficial effects that:

the slag-iron separator is placed in the main iron runner, two side walls of the slag-iron separator are tightly attached to two side walls of the main iron runner, an iron through hole channel is arranged between the lower bottom surface of the slag-iron separator and the bottom surface of the main iron runner, so that normal tapping can be ensured, and a pouring channel is arranged between the upper top surface of the slag-iron separator and two side walls of the upper part of the main iron runner, so that normal tapping and slag discharging can be ensured; the steel bar anchoring piece can ensure the pouring strength of the slag-iron separation body; the crown block can separate and hoist the slag body into the main iron runner through the hoisting ring.

The slag-iron separator has the advantages of simple structure, convenience in use and easiness in manufacturing, when the large gate of the skimmer fails, the slag-iron separator can be quickly installed, the conditions of blast furnace damping down, slow wind, single-field tapping and the like caused by the failure of the large gate of the skimmer are avoided, the construction time is greatly reduced, and the normal production of the blast furnace is ensured.

The maintenance construction time is more than 8 hours before the use of the utility model, the maintenance construction time is reduced to 3 hours after the use of the utility model, which is 37 percent of the original construction time, the construction is convenient and rapid, the risk is low, the effect is good, and the utility model is worth to be popularized and used in the industry.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the state of use of the present invention.

The figures are labeled as follows: the device comprises a hoisting ring 1, a slag-iron separating body 2, a steel bar anchoring piece 3, a pouring material 4, a trapezoidal frame 5, a tie bar 6, a suspender 7, a main iron runner 8, an iron through hole 9 and a pouring channel 10.

Detailed Description

The utility model comprises a hoisting ring 1 and a slag-iron separator 2, wherein the slag-iron separator 2 consists of a steel bar anchoring part 3 and a pouring material 4.

The drawing shows that the slag-iron separator 2 is a cubic casting block with a trapezoidal section, the length of the upper bottom of the trapezoid is greater than that of the lower bottom of the trapezoid, the inclination of two side edges of the trapezoid is matched with the inclination of the side wall of the main iron runner 8, the length of the lower bottom of the trapezoid is greater than the width of the 8 bottom surface of the main iron runner, and the length of the upper bottom of the trapezoid is less than the width of an upper end opening of the main iron runner 8.

When the iron slag separating body 2 with the structure is placed in the main iron runner 8, a gap is formed between the lower bottom surface of the iron slag separating body 2 and the bottom surface of the main iron runner 8, and the gap is an iron passing pore channel 9, so that iron tapping can be ensured. Meanwhile, a pouring channel 10 is formed between the upper top surface of the slag-iron separating body 2 and two side walls of the upper part of the main iron runner 8, and slag and iron can be discharged normally.

The figure shows that a steel bar anchoring member 3 is embedded in the slag-iron separating body 2, and the steel bar anchoring member 3 and the slag-iron separating body 2 are cast into a whole. The steel bar anchoring part 3 comprises two trapezoid frames 5 which are vertically placed, the planes of the two trapezoid frames 5 are parallel to the trapezoidal section of the slag-iron separating body 2 respectively, the upper width of the two trapezoid frames 5 is greater than the lower width, a plurality of tie bars 6 are welded between the two trapezoid frames 5, and the tie bars 6 are perpendicular to the planes of the trapezoid frames 5. The steel bar anchoring piece 5 can ensure the pouring strength of the slag-iron separation body 2.

The drawing shows that a hoisting ring 1 is arranged above the slag-iron separation body 2, a vertical downward hanging rod 7 is arranged at the lower end of the hoisting ring 1, and the hanging rod 7 extends into the slag-iron separation body 2 and is welded with the steel bar anchoring piece 3. When the slag-iron separator 2 is used, the overhead travelling crane hoists the slag-iron separator 2 in place through the hoisting ring 1.

The using method of the utility model is as follows:

welding and fixing a suspender 7 at the lower part of the hoisting ring 1 and the steel bar anchoring piece 5, then placing the steel bar anchoring piece 5 into a mould, exposing the hoisting ring 1, pouring a pouring material 4 into the mould to pour the pouring material and the steel bar anchoring piece 5 into a whole, stirring uniformly, compacting, standing, demoulding and baking for later use;

the casting material 4 has the advantages of rapid baking without cracks or few cracks, excellent high-temperature mechanical property, slag corrosion resistance and strong spalling resistance, such as corundum self-flowing casting material, ZL-90 and the like;

the slag iron separating body 2 is demoulded and baked for more than 48 hours, and the baking time before use is more than 2 hours;

when the ablation failure phenomenon of the large gate of the skimmer occurs on site, the spare temporary slag-iron separating body 2 is hoisted to the main iron runner 8 by a crown block and is installed in front of the original slag-iron separating device and is attached to the two phases, the size of the slag-iron separating body 2 is ensured to be matched with the size of the original large gate and the main iron runner 8, an iron through hole 9 is reserved below the slag-iron separating body 2, normal tapping is ensured, a pouring channel 10 is reserved above the slag-iron separating body 2, and normal tapping and slag discharging are ensured.

The slag-iron separator 2 must ensure that iron is not held back when a large stream flows at a large gate opening, so the slag-iron separator 2 is determined to be in an appropriate size according to the size of the furnace volume and the number of tapping times.

One embodiment of the utility model is as follows:

the length of the upper top edge of the trapezoidal section of the slag-iron separator 2 is 800mm, the length of the lower bottom edge is 500mm, and the inclination of the side wall is 1.5: 6, the height of the slag-iron separating body 2 is 600mm, the thickness is 500mm, and the height of the iron passing hole 9 is 200 mm. The height of the pouring channel 10 is 200 mm.

Claims

1. A blast furnace slag-iron temporary separation device is characterized in that: the slag-iron separating body is composed of a slag-iron separating body (2), a hoisting ring (1) and a steel bar anchoring piece (3), wherein the section of the slag-iron separating body (2) is a cube casting block with a trapezoid shape, the length of the upper bottom of the trapezoid shape is larger than that of the lower bottom of the trapezoid shape, the gradient of the two side edges of the trapezoid shape is matched with the gradient of the side wall of a main iron runner (8), the length of the lower bottom of the trapezoid shape is larger than the width of the bottom surface of the main iron runner (8), the length of the upper bottom of the trapezoid shape is smaller than the width of the upper end opening of the main iron runner (8), the gap between the lower bottom surface of the slag-iron separating body (2) and the bottom surface of the main iron runner (8) is a through iron channel (9), a casting channel (10) is arranged between the upper top surface of the slag-iron separating body (2) and the two side walls of the upper part of the main iron runner (8), the steel bar anchoring piece (3) is embedded in the slag-iron separating body (2), the steel bar anchoring piece (3) and the slag-iron separating body (2) are cast into a whole, the hoisting ring (1) is arranged above the slag-iron separating body (2), the hoisting ring (1) is connected with a steel bar anchoring piece (3) in the slag-iron separating body (2);

reinforcing bar anchor assembly (3) in slag-iron separator (2) include two trapezoidal frames (5) of placing perpendicularly, the plane of two trapezoidal frames (5) is parallel with the trapezoidal cross-section of slag-iron separator (2) respectively, the upper portion width of two trapezoidal frames (5) is greater than the lower part width, there are a plurality of lacing wires (6) welded connection between two trapezoidal frames (5), a plurality of lacing wires (6) are perpendicular with the plane of trapezoidal frame (5), the lower extreme of hoist and mount ring (1) has perpendicular decurrent jib (7), jib (7) stretch into in slag-iron separator (2) with reinforcing bar anchor assembly (3) welded connection.